Mvspsp 2.3.5

: If you get a "CRC32 not correct" error, it usually means your ROM set is too old or missing specific files required by the 2.3.x engine.

Place uni-bios.rom (version 3.2 is ideal) into the MVSPSP/BIOS/ folder. Then, in the emulator settings, set “BIOS” to “Uni-BIOS.” During game boot, hold (or Start + Select ) to access the Universe BIOS menu. Here you can: mvspsp 2.3.5

If you decide to install it, use these settings for maximum stability: : If you get a "CRC32 not correct"